ArticleNature communications2022
Genomic basis of the giga-chromosomes and giga-genome of tree peony Paeonia ostii.
Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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50 citing papers in PubMed, 90 citations in OpenAlex.
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- SNP-based association analysis of key genes involved in triglyceride biosynthesis reveals genetic regulation of oil content and fatty acid composition in tree peony seeds.BMC plant biology · 2026Article
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- Identification of the PoARFs gene family in tree peony and expression analysis of PoARF7 and PoARF10 in petals and stamens formation.BMC plant biology · 2026Article
- Decoding a unique double flower pattern in herbaceous peony: insight into proliferate flower bud development.Annals of botany · 2026Article
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- Somatic embryogenesis and genetic transformation in peony: challenges and applications.Frontiers in plant science · 2026Review
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- Construction of a Multi-Omics database for Paeonia lactiflora: A resource for comprehensive data integration and analysis.BMC plant biology · 2025Article
- Unlocking the molecular secrets ofHorticulture research · 2025Article
- Chlorophyllase (PsCLH1) and light-harvesting chlorophyll a/b binding protein 1 (PsLhcb1) and PsLhcb5 maintain petal greenness in Paeonia suffruticosa 'Lv Mu Yin Yu'.Journal of advanced research · 2025Article
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Authors and funding
24 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tree peony (Paeonia ostii) is an economically important ornamental plant native to China. It is also notable for its seed oil, which is abundant in unsaturated fatty acids such as α-linolenic acid (ALA). Here, we report chromosome-level genome assembly (12.28 Gb) of P. ostii. In contrast to monocots with giant genomes, tree peony does not appear to have undergone lineage-specific whole-genome duplication. Instead, explosive LTR expansion in the intergenic regions within a short period (~ two million years) may have contributed to the formation of its giga-genome. In addition, expansion of five types of histone encoding genes may have helped maintain the giga-chromosomes. Further, we conduct genome-wide association studies (GWAS) on 448 accessions and show expansion and high expression of several genes in the key nodes of fatty acid biosynthetic pathway, including SAD, FAD2 and FAD3, may function in high level of ALAs synthesis in tree peony seeds. Moreover, by comparing with cultivated tree peony (P. suffruticosa), we show that ectopic expression of class A gene AP1 and reduced expression of class C gene AG may contribute to the formation of petaloid stamens. Genomic resources reported in this study will be valuable for studying chromosome/genome evolution and tree peony breeding.
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